Convoy L21A SST40 CW 2300lm In-depth review, Pros and Cons

Luminus SST40 CW LED
2300 lm output
129600 cd intensity
1 x 21700 Li-Ion battery

The Convoy L21A SST40 CW (L21ASST40CW) released in 2019. It uses Luminus SST40 CW LED, SMO reflector and 1 x 21700 Li-Ion battery. The powerful emitter in this flashlight provides up to 2300 lm output, 129600 cd intensity, and a beam distance of 720 m.

The L21A SST40 CW flashlight is an essential tools for emergency preparedness. In situations like natural disasters or blackouts, when electricity is unavailable, a flashlight becomes crucial for navigating dark areas, locating supplies, or signaling for help. This light has 4 modes of lighting. The memory function is a nice feature, the light will remember the last used mode.

Convoy L21A SST40 CW (L21ASST40CW) pictures

Convoy L21A SST40 CW / L21ASST40CW photo
Convoy L21A SST40 CW / L21ASST40CW photo
Convoy L21A SST40 CW / L21ASST40CW photo
Convoy L21A SST40 CW / L21ASST40CW photo
Convoy L21A SST40 CW / L21ASST40CW

The specifications below are based on the official data published by the manufacturer, but we also take user reviews into consideration. If you found an error or something lacking in the specifications above for the Convoy L21A SST40 CW, then don’t hesite and signal the problem to us.

Convoy L21A SST40 CW (L21ASST40CW) specifications

NameL21A SST40 CW
Rated 4/5 based on 1234 user votes.

The L21A SST40 CW flashlight enhances safety by illuminating potential hazards and improving visibility in low-light conditions.


Weight360 g
Length169 mm
Head diameter64.5 mm
Materialaluminium alloy with HAIII hard-anodized finish

This 360 g flashlight would be considered relatively heavy for a handheld flashlight. Flashlights in this weight range may have features like extended battery life, intense brightness, or rugged construction for heavy-duty use. The length of a flashlight can also impact its balance and weight distribution. A well-balanced flashlight, where the weight is evenly distributed, can be more comfortable to hold for longer periods and reduce hand fatigue.

Aluminium body of L21A SST40 CW is known for its durability and strength. It offers excellent resistance to impacts, scratches, and corrosion, making it suitable for rugged outdoor use or in demanding environments. The HAIII process produces a hard and wear-resistant surface on the aluminum, making it more resistant to scratches, abrasions, and impacts. This improves the overall durability of the flashlight body. The L21A SST40 CW flashlight is available in black.


EmitterLuminus SST40 CW LED
Color temperature6500 K
LensAR coated glass
Switchmechanical rear, forward clicky

The emitter of L21A SST40 CW manufactured by Luminus, a US-based LED manufacturer. Luminus is recognized as a reputable LED manufacturer in the lighting industry. They are known for producing high-quality LEDs with excellent performance and reliability. Color temperature is a characteristic of light. It is measured in units called Kelvin (K) and is used to quantify the color appearance of light sources, particularly white light.

The L21A SST40 CW has a smooth reflector. The properly focused smooth reflector gives you a more cohesive hotspot and therefore throws better. This flashlight has an AR coated lens. This Anti-Reflective coating is a thin optical coating applied to the surface of the lens to minimize reflections and improve light transmission. The multiple switch configuration on the L21A SST40 CW flashlight can be a useful option, providing additional versatility and convenience in operating the flashlight.

The L21A SST40 CW has mechanical switch. Mechanical switches are known for their durability and reliability. They are typically built with robust construction, making them resistant to wear and tear, and capable of enduring various environmental conditions. The placement of the rear switch at the end of the L21A SST40 CW flashlight facilitates a secure forward grip. This grip allows for better control and handling of the flashlight, especially in situations where precision and stability are important.


Flux2300 lm
Intensity129600 cd
Throw720 m
CD/LM factor56.35

With 2300 lm, the L21A SST40 CW flashlight will offer a brighter and more powerful beam of light. This higher output can be advantageous in various situations where you require enhanced visibility or need to illuminate larger areas. 129600 cd represents an extremely high level of brightness for a flashlight. The throw is the calculated distance in meters at which the flashlight produces a light intensity of 0.25 lux. The cd/lm factor (candela-to-lumen ratio) provides information about how concentrated or focused the light output of a light source is. A higher cd/lm ratio indicates that the light is more concentrated in a specific direction, while a lower ratio indicates a more diffused or spread-out light output.


Modes4 modes
Mode memoryyes
Ramping modeno

Modes on a flashlight refer to different output settings or levels of brightness that can be selected to suit different needs and preferences. The L21A SST40 CW has mode memory. Mode memory means that the flashlight will remember the mode you were using when the light was last turned off, and when you turn it on again.


Battery1 x 21700 Li-Ion battery
Battery indicatorno
Charger portno
Thermal regulationyes

The Convoy L21A SST40 CW flashlight is powered by 1 x 21700 Li-Ion battery. The L21A SST40 CW cannot charge batteries directly. You may need an external charger to keep your battery going. This flashlight has a built-in low voltage protection (LVP) to prevent damage to the cell from over-discharge, so protected cells are not necessary. The built-in thermal control automatically adjusts brightness output to prevent overheating. The "8" in the IPx8 rating indicates the highest level of protection against water ingress.

The performance of the Convoy L21A SST40 CW flashlight is measured according to the ANSI / NEMA FL1 Standard 30 seconds after switching the light on. The ANSI/NEMA FL1 2009 Standard is a set of flashlight performance guidelines.

Convoy L21A SST40 CW (L21ASST40CW) comparisons

According to our statistics, the Convoy L21A SST40 CW flashlight was most often compared on our site with the following flashlights.

Convoy M26C SST40 (M26CSST40) Convoy M26C SST40 Convoy M21B SST40 (M21BS) Convoy M21B SST40 Convoy M21C-U XHP70.2 (M21CUXHP702) Convoy M21C-U XHP70.2 Convoy C8+ SST40 (C8PLUSSST40) Convoy C8+ SST40 Convoy S11 XHP50.2 (S11XHP502) Convoy S11 XHP50.2 Convoy L21A SST40 CW (L21ASST40CW) Convoy L21A SST40 CW Convoy L2 XPL (L2XPL) Convoy L2 XPL Convoy M21C SST40 (M21CSST40) Convoy M21C SST40

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